Game controller attachment device



FIG. 1 is a perspective view of our game controller attachment device;

FIG. 2 is a top view thereof;

FIG. 3 is a bottom view thereof;

FIG. 4 is a left side view thereof;

FIG. 5 is a right side view thereof;

FIG. 6 is a bottom edge view thereof;

FIG. 7 is a top edge view thereof; and,

FIG. 8 is another perspective view of our game controller attachment device, shown in relation to a controller.

The broken lines environment in FIG. 8 is for illustrative purpose only and forms no part of the claimed design. 

CLAIM The ornamental design for a game controller attachment device, as shown and described. 